A court in St. Petersburg has granted bail to six more Greenpeace activists, including the ship's American captain, Peter Willcox.

Alexandra Harris and Kieron Bryan of the U.K., Faiza Oulahsen and Mannes Ubels of the Netherlands, and Anne Mie Roer Jensen from Denmark will also be released after bail of 2 million rubles ($61,300) is paid for each.

On November 18 and 19, the court granted bail to 12 other Greenpeace activists, who were also among the 30 people from 18 countries arrested after a protest in September at a Gazprom oil rig in the Arctic.

One of those granted bail on November 19 -- Ana Paula Alminhana Maciel of Brazil -- left the jail in St. Petersburg on November 20.

Russia initially charged the 28 activists and two journalists with piracy, which carries up to 15 years in jail.

The charges were later changed to hooliganism, which can be punished by up to seven years.